An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Harrison SL, Greening NJ, Williams JE, Morgan MD, Steiner MC, Singh SJ.Harrison SL, et al. Among authors: morgan md.Respir Med. 2012 Jun;106(6):838-44. doi: 10.1016/j.rmed.2011.12.003. Epub 2011 Dec 23.Respir Med. 2012.PMID: 22197576Free article.
Singh SJ, Morgan MD, Scott S, Walters D, Hardman AE.Singh SJ, et al. Among authors: morgan md.Thorax. 1992 Dec;47(12):1019-24. doi: 10.1136/thx.47.12.1019.Thorax. 1992.PMID: 1494764Free PMC article.
Singh SJ, Morgan MD, Hardman AE, Rowe C, Bardsley PA.Singh SJ, et al. Among authors: morgan md.Eur Respir J. 1994 Nov;7(11):2016-20.Eur Respir J. 1994.PMID: 7875275Free article.Clinical Trial.
Singh SJ, Smith DL, Hyland ME, Morgan MD.Singh SJ, et al. Among authors: morgan md.Respir Med. 1998 Sep;92(9):1146-54. doi: 10.1016/s0954-6111(98)90410-3.Respir Med. 1998.PMID: 9926171Free article.
Revill SM, Morgan MD, Singh SJ, Williams J, Hardman AE.Revill SM, et al. Among authors: morgan md.Thorax. 1999 Mar;54(3):213-22. doi: 10.1136/thx.54.3.213.Thorax. 1999.PMID: 10325896Free PMC article.